noun
fruit basket (votive offering)
A basket of fruit or other offerings presented at a shrine or temple. Often used in religious or ceremonial contexts.
神社に盛り籠を奉納した。
We dedicated a fruit basket at the shrine.
祭壇の前に色とりどりの盛り籠が並べられた。
Colorful votive fruit baskets were arranged in front of the altar.
供物 is a general term for offerings (food, drink, etc.) to gods or spirits, while 盛り籠 specifically refers to a basket of fruit or similar items used as a votive offering.
Compound of 盛り (mori, 'serving' or 'offering') + 籠 (kago, 'basket'). The exact historical origin is uncertain, but it refers to a basket used for presenting offerings.